4o8 Field Museum of Natural History — Zoology, Vol. VII. 



Locality 



Gilgil 



Gilgil 



Gilgil 



Lake Elmenteita 



Length of body io6 



Length of head 30 



Width of head 25 



Tip of snout to ear 24 



Interorbital 15 



Length of arm 51 



Distance from base of 5th finger to tip, 



of 4th 14 



Length of leg 70 



Length of tibia 29 



Distance from base of 5th toe to tip of 4th 22 



Length of tail | 106^ 



Scales around body ' 51 



108 

 30 

 25 

 24 

 14-5 

 50 



14 

 74 

 30 

 24 

 122* 



54 



114 

 33 

 25 

 26 



15 

 51 



15 

 73 

 29 

 24 

 120'' 

 52 



91 

 27 



45 



14 

 64 

 24 

 22 

 128 



77 

 23 

 18 

 18 

 10 

 36 



57 

 22 



[06 



55 



crest, slightly larger, more faintly keeled and less convergent dorsal 

 scales, and the very large and strongly spinose scales on the tail. 

 The nostril is slightly lower and less directed upward. The bands 

 on under surface of the head are much more conspicuous than on any 

 of the specimens oi A. colonorum in the collection. 



All of the specimens are males. The above measurements are 

 given in mm. 



Agama atricollis A. Smith. 



Nairobi. Body 80 mm., tail 92 mm., 9 ; body 103 mm., tail 

 no mm., cJ^. 



Kijabe. Body 35 mm., tail broken. 



Gil Gil. Body 77 mm., 9 ; body 88 mm., tail 103 mm., cJ^ ; body 

 113 mm., tail 118 mm., d^. 



Lake Elmenteita. Body 75 mm., tail 76 mm., 9 ; body 100 mm., 

 tail III mm., 9 ; body 87 mm., tail loi mm., d^ ; body 99 mm., tail 

 122 mm., d^ ; body 115 mm., tail 147 mm., d* ; body 88 mm., tail 

 103 mm., (S" \ body 113 mm., tail 118 mm., d^. 



The specimens mentioned above show some variation, the female 

 from Nairobi and a female (100 mm.) and a male (87 mm.) from Elmen- 

 teita have 5 whitish blotches on dorsal surface about the size of the 

 eye, and a few narrow faint whitish lines across the back between these 

 blotches; the tail is distinctly barred with black. On the female 

 from Gilgil these spots and lines are very indistinct. The ventral 

 surface of the head is light to dark brown irregularly spotted with 

 lighter, to blui^^h M.-uk on tlic old males. The ground color of the 



♦The tails of till 1 1,1 

 the end* IxMnK (|uit> 

 are 6, 3 and '. tinn t« |, 



Mil I ml 



il.-.l 



CiillMl illl' 

 ■ .\r|. lll( 



apparently incomplete, 

 iliaiiuti-rs of these ends 



